I need to make a small transformer (that uses AC obviously) that would boost an input voltage of 20-30 millivolts at 1.5 mA to a output voltage of 1 volt (with a current that would obviously be very small) How must I design and build the transformer to accomplish this? Thank you.
Transformers follow Ohm's Law and multiply or divide voltages based on the number of turns making each coil. You need only ensure your two coils have the appropriate number of windings. As for actual numbers for the windings, 1.5mA is an absolutely tiny amount of current, so you have considerable flexibility in this. If you are looking to build a transformer, you should look up the information on what you're planning to use for a core, to be able to calculate the voltage across the secondary coil.
